A Computational Study of Mixing Microchannel Flows
摘要
Motivated by recent experimental advances (Stroock et al. 2002) in microfluidic mixers, we study the passive mixing and flow properties of a patterned microchannel by means of computational fluid dynamics (CFD). Such geometries overcome the low Reynolds number, high Peclet number boundaries to efficient mixing by creating a three-dimensional flow that yields chaotic trajectories for advected passive scalars. The flow seems to exploit an effective shearing mechanism, or 'ditch mixing,' rather than the alternating span-wise vorticity mechanism we anticipated. Further, we find superexponential mixing for a modification of the geometry. It is hoped that such CFD studies advance both the capabilities and the understanding of such micropatterned mixing flows.
引用
@article{arxiv.cond-mat/0307482,
title = {A Computational Study of Mixing Microchannel Flows},
author = {J. P. Bennett and C. H. Wiggins},
journal= {arXiv preprint arXiv:cond-mat/0307482},
year = {2007}
}
备注
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